of cleveland



J. S. FISH.

r Lamp. No. 102,240. Patented April 26,1870.

J I l flatten-t time.

JOHN s. FISH, or CLEVELAND, OHIO.

La... Patent 1v .102,24o, dated 4 1M120, 1870.

LAMP.

The Schedule referred to in these Letters Patent and making part of the same.

1, JOHN S. Frsn, of'Oleveland, in the county of Cuyahoga and State of Ohio, have invented certain Improvements in Non-explosive Lamps, of which the following is a specification.

The nature of this invention relates to the construction of a non-explosive lamp for burning any of the volatile oils, it being so constructed that a current of cold air constantly passes down and around the wick-tube, thus eflectually cutting off the possibility of heat being conveyed to the bulk of oil in the lamp.

The figure is a vertical section of the following-described lamp.-

. In the drawing- A represents the body or fount of 'a lamp, which I maybe made in the form shown, or any other suitable form.

In the top, in a suitable opening, is secured a tube,

. B, which is made tapering, and extends down nearly to the-bottomiof the fount.

The bottom of said tube is closed, and from the center rises the wick-tube O.

A straight tube, D, surrounds the wick-tube, and

consists of a short tube, D, having secured to it a per-,

the burner.

The tube D may be withdrawn from the tube 13 when desired.

The shaft of the wick-wheel is made in two parts, the thumb-piece 0 having a square socket in it at e, in which the wheel portion rests.

A small spiral spring, 0, embracing the socket portion, keeps it in place.

This part of the device for raising the wick is attached to the tube D, the other part being secured to the wick-tribe 0..

The practical operation of this lamp is'as follows:

The external air, which feeds the flame, passes in at the opening in the top of the tube B, surrounding the tube D, in the direction indicated by the arrows, and, passing through the perforations of the tube D, is thoroughly distributed along its whole length, equalizing the flow of air, and keeping the whole at a low state of temperature; thence up into the burner E.

If the perforations were carried up higher than shown, the result would not be thus.

By this means a constant influx of external air is caused at the point where most needed, and efl"ectually cuts oil any communication of heat from the burner to the body of the lamp. The air is, therefore, made to serve two purposes at the same time.

By the use of the perforated'tube the air is more evenly fed to the flame, and will prevent any sudden flashes of the flame fi-om pufi's of air from without.

In this manner of construction, too, the burner sets near the body of the lamp, which is essential in-obtaining a good light.

Having described my invention,

What I desire to secure by Letters Patent is- 1. The tube D, having its lower portion made of perforated metal, and itsupper part D whole, and provided with flanges d (I, as shown, and for the purpose described.

2. The tube D, in combination with the tube in a lamp, when the parts are constructed and arranged as described and for the purpose set forth.

'J. S. FISH.

Witnesses:

Geo. W. Tmnrr'rs, E. T. Oowrs. 

